CMP will start scanning all the roms in the roms folder of your newly created directory.
Some roms will be moved to the Backup folder.

Dialog: Fix Wrong Set Name
--> Press: Yes To All
Dialog: Fix Unneeded File
--> Press: Yes To All
Dialog: Fix Missing ROM
--> Press: Yes To All
Dialog: Fix Wrong ROM Place
--> Press: Yes To All
Dialog: Fix Wrong ROM Size
--> Press: Yes To All
note: some of the dialogs above may not appear or other/similar may pop up, In those cases choose: Yes to All

torrentzip:
--> Open a Windows File Manager (Explorer)
--> Drag and Drop your new roms folder on the trrntzip.exe binary.
Torrentzip will start adding archives in a command window.
Torrentzip will skip the archives that are already Torrentzip'ed.
The window will close when the process is finished.

To be absolutely sure nothing went wrong, you can scan your roms again with clrmamepro.